Wind Advisory issued December 18 at 1:04PM PST until December 18 at 7:00PM PST by NWS Portland OR
Issue date: 2025-12-18T21:04+00:00
* WHAT...South winds 15 to 20 mph with gusts up to 45 mph expected. * WHERE...Central and Southern Willamette Valley, Central Oregon Coast Range Lowlands, Clackamas County Cascade Foothills, and Cascade Foothills of Marion and Linn Counties. * WHEN...Until 7 PM PST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Saturated soils could result in downed trees, and tree limbs could be blown down. Power outages may result.
Flood Warning issued December 18 at 10:30AM PST until December 20 at 5:20PM PST by NWS Portland OR
Issue date: 2025-12-18T18:30+00:00
...The Flood Warning continues for the following rivers in Washington...Oregon... Cowlitz River at Kelso affecting Cowlitz County. Johnson Creek at Sycamore affecting Multnomah and Clackamas Counties. Clackamas River at Estacada affecting Clackamas County. Clackamas River near Oregon City affecting Clackamas County. Sandy River near Bull Run affecting Multnomah and Clackamas Counties. Hood River Near Hood River affecting Hood River County. Siuslaw River near Mapleton affecting Lane County. Molalla River near Canby affecting Clackamas County. Marys River near Philomath affecting Benton County. Pudding River at Aurora affecting Marion and Clackamas Counties. Luckiamute River near Suver affecting Polk and Benton Counties. S Yamhill River at McMinnville affecting Yamhill County. ...The Flood Warning is extended for the following rivers in Oregon... Siletz River at Siletz affecting Lincoln County. Trask River near Tillamook affecting Tillamook County. * WHAT...Minor flooding is forecast. * WHERE...S Yamhill River at McMinnville. * WHEN...From Friday evening to Saturday afternoon. * IMPACTS...Above 54.0 feet, numerous secondary and minor access roads begin to flood. Road closures are possible at a few locations. * ADDITIONAL DETAILS... - At 9:30 AM PST Thursday the stage was 29.8 feet. - Bankfull stage is 45.0 feet. - Forecast...The river will rise above flood stage Friday evening and crest around 53.8 feet Saturday morning. It will then fall below flood stage later on Saturday. - Flood stage is 50.0 feet. - http://www.weather.gov/safety/flood
Flood Watch issued December 18 at 2:42AM PST until December 20 at 4:00PM PST by NWS Portland OR
Issue date: 2025-12-18T10:42+00:00
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Northwest Oregon and southwest Washington including the following counties. In Oregon: Benton, Clackamas, Clatsop, Columbia, Hood River, Lane, Linn, Lincoln, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill. In Washington: Clark, Cowlitz, Pacific, Skamania, and Wahkiakum. * WHEN...Through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Area creeks and streams are running high and could flood with more heavy rain. Landslides and debris flows are possible during this flood event. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at serious risk from rapidly moving landslides. * ADDITIONAL DETAILS... - An atmospheric river is forecast to bring periods of heavy rain to northwestern Oregon and southwestern Washington today. This system occurs at a time when area rivers continue to run high and soils remain saturated following heavy rain earlier in the month. During initial heavy rainfall today, the urban and small stream flooding threat will be most urgent, although the details of precise timing and location of the highest risk remains uncertain at this time. As runoff works its way downstream, the river flooding threat will increase tonight into Friday, with numerous area rivers now forecast to reach at least Minor flood stage. Slower reacting rivers may stay in flood stage into Saturday afternoon. - http://www.weather.gov/safety/flood
